Speed regulator for motor vehicles



June 24, 1930.. w. B. DAws 1,765,659

SPEED REGULATOR FOR MOTOR VEHICLES Filed June 18, 1925 2 Sheets-Sheet l ;Eg. 5. f

. 3mm-:Not

57 Wan Er E1. Davia .V-llllw-MWL- /L r June 24, 1930. w. B. DAVIS 1,765,659

SPEED REGULATOR FOR MOTOR VEHICLES Filed June 18, 1923 A 2 lshemzs-sheev'r. 2

wuenffoz Davis abbo: n mf Patented June 24,1930

UNITED STATES PATET WALTER B.' DAVIS, l01? AURORA, ILLNOIS SPEED REGULATOR FOR MOTOR VEHICLES Application filed .Tune 18, 1923. Serial No. 646,241.

This invention relates to improvements in With which the speed control apparatus is means for automatically regulating the speed used. of motor vehicles. Figure 7 is a rear elevation of a detail of The primary object lof this invention is this invention Which may he used Within a the provision of speed regulating apparatus lCarburetor. for inotor vehicles Which contemplates the Figure 8 is a diagrammatic representation regulation of fuel, so that but a limited f the Wiring system of this invention. quantity of the. same may be fed to the nter- Ihn the drawings, wherein for the purpose nal combustion after the vehicle has attained 0f luuSltlOIl 1S Shown but the Pefelled @Hl- 10 a predetermined speed, thus preventing eX- beulmeut 0f uhle luveuteu: the letter AIuuy 60 ceeding of such speed, Vand tending to lower geueuuy ueelguete, e meter Vehlele. any the Vehicle Speed approved type, which may use an internal A further object of this invention is the Combuebleu euglue es Pfeleumil meuue provision of Speed regulatngappamms 0f therefor. In connection with the speed regthe above mentioned character Which is elecmuon of the Vehicle A the mmm D uw 65 trically operated, and the circuit of which be used for regulatmg the upply of fuel m embodies a speedometer regulated switch the lmntemal @Q mbusjlon engme B; the meum mechanism adapted to close When the speed- D Puifembly lflcludmg alspdomr E. en? ometer indicates a predetermined speed. bodylfng .Gerwen nove; Stfucture bh@ Ctlcult o Other objects and advantages of this inven- F Whlh lncludes@ Sonold G and a Vavef- 0 tion will he apparent during the course of Whlch 1S automatically .contoued by melig-lz' the following detailed description ing the solenoid Gr, as Will be subsequently de- In the acompinyng drawings 01.11? ing Scliliinnection with the internal combustion O5 a part of thls Speclcatlon and-Wherem Slml eroine B a carburetor l0 ina f be ein levied lar reference characters designate corre- 1er ,1 1 1 c 157 l? 1Q," spending parts throughoutthe several views: W lll Iuiyt ue luf 1ue 119.135 P1P?) A heft Figure l is a fragmentary side elevation, lng w1 em 0 M lomrw HL 1.a pli-)L pltim Partly in section, of a vehicle, showing` the 12 may eafdfuiaptd 19in Connecmxllbw tg@ internal combustion engine used for profodetsct `e P ipe 13? ls W1 es a S0 paume); thereof and detalls of the Improved The specific object of this invention resides Speed regulatnfg apparatus as used m con" in the regulation of fuel in so far as intake 116015.10 thelewlth' into the cylinders of the engine B is conl fulguire 2 1S ffugmutuf luul leW Putl't cerned, in contra-distinction to speed regula- 'u Y m ,C1055 Seq Ionian .par y Cmbmmma 1C? tors for motor vehicles which contemplates S0 gglu gle lnrlgve Slvile' cutting off the ignition of the engine, Whejn f i, a L the vehicle` speed eiiceeds a cei tain amount. Supply O' meter fuel muy b e 'eebfleteu- The 'defect of'vehicle speed regulation by Figure 3 1S e freut elevetleu 0f u Speed' shutting off of ignition is Well understood, 4,() Ornet'er Constructed t0 accord. Vith :1D-e as the Cut O' usually when the Q0 VBHlOIL 1 n e l p throttle is Wide open, thus permitting the Elgure 4 1S ,e Sl'ue eleva-uen Partly 1u eeeecylinders of the engine to receive exceptionalsection, showingl cooperating details of this 1y Hch Charges, Whlch we not exploded, but invention as embodied in a speedometer. are pumped into the exhaust manifold and Figure 5 is a fragmentary enlarged View, muilier. When the speed drops as to again e partly in cross section, showing a portion of complete the ignition circuit, such collecthe speedometer constructed after this intion of fuel charge Within the exhaust and vention. l" muffler chambers is very often exploded, re-

Figure 6 is a detail of this invention Which sulting in destruction to the engine or muflier. is used Within the speedometer of the vehicle However, With this invention, such occur- Cil Referring to the circuit '11", the sameincludes a wiring system which extends from the sjiieedonieter E through a protecting conduit 25, and includes at its forward end the solenoid G, of any approved construction, although preferably providing an arcuate passageway Q7 therein, which may be arranged concentric with thevalve pin 18. The solenoid G'may be supported, 'as by an 'arm or bracket 2S attached to the ring .20, so that the valve is always in a predetermined relation with respectv to the solenoid G. The' valve H preferably includes a'substantially L-shaped operating arm 30, which includes a straight lever arm 31 connected at its free end in any approved manner to the valve pin 18, and at its other end having the arcuate lever arm 32 slidably extending intor the passageway 2T of the solenoid G and adapted to be attracted by said solenoid upon its magnetization, as will be subsequently described. A spring 33 is preferably provided, attached at ,one end to the vi'ntalrepipe 13 `and at its other end preferably engaging the lever 'arm 31 to normally position'the valve H open, substantially as is illust-rated in Figure 2 of the drawings. The circuit system F preferably includes a storage battery 35, which may be the ordinary ignition battery or a special battery providcdfor solely operating the circuit through the solenoid G.

Referring to the construction of the speedometer E, the same may preferably include operating` details of ordinary construction, and operated either from thevehicle wheel orthe transmission mechanism. lt includes a'housing 40, having a front closure 4t2, hingedly connected as at 43,'laterally at thefront of the housing 40; said closure l2 vpreferably including't'he ringfshaped supporting portion 45, which may support the transparent platedti, so as to render the delineation 47 upon the dial i8 visibleexterior of the speedometerE. `The speedometer furthermore includes an indicator arm 50, `which ispivoted at 51, within the housing'lO,

and cooperates over the delineation 4-7, to

designate vehicle speed, as is well understood. The indicator arm 50 preferably comprises one Contact of a switch mechanism provided within the speedometer E, and to this end is preferably connected in the wiring system of the circuit F.

A ring shaped support is preferably mounted within the housing l() forwardly of the dial 48, which may support rearwardly thereof a crescent shaped support 56 for an adjustable contactar'y said support 56 'the support 56, and over a predetermined id'elineat'ionl?. The crescent support'f is preferably 'connected in the circuit F as at '65, and tne contact armO as the same moves about the speedometer, may engage the inner end or tip 67 of the contact 57,for closing the circuit F for operating the solenoid G Referring to theV operation of this invention, the adjustable contact 57 is first adjusted upon'its supporting` portion 56, so that the inner end 87 thereof lies over a predetermined delineation 47, indicating the maximum speed at whichit 1s desired to run the vehicle upon which the speedometer E is mounted.

this adjusting operation, and when ithas been completed the closure member 42 is closed, and'locled, as by means 70, sov that no unauthorized tampering with the speedometerE is possible. Normally, lthe `spring 33 retains the valve'H wide open, so thatfuel charges may enter the internal combustion engine cylinders in accordance vwith thedesire ofthe vehicle' driver. As the vehiclels-speed isy increased, the indicator arm v50, of course, moves over the dial e8, and as the free end of the arm 50 engages the' adjustable Vcontact 57, the circuit F is closed, energizing the solenoid G, which in accordance with well known principles attracts the arcuatelever arm 32 of the operating lever 30, swinging they valve H toward closed position within the passageway of the fuel conduit, tending to cut olf supply of fuel to the engine cylinders. This will, of course, automatically*decrease the speed of the vehicle. The valve H is never entirely closed, so that it is notpossible by the means Dto completely shut off'supply of fuel to the internal. combustion engine as to stop the same. The lever 30, when the valve H is in its most closed position abuts the edge 71 of the solenoid G, thus preventing any further closing of the valve H.

From the' foregoing description of this in- The closure member 42 1s of course open during vention, it is apparent that a practical speed control device for vehicles has been provided, which may include the ordinary speedometer Ias an automatic operator therefor notwithstanding the ordinary delicacy of such instrument. It will be apparent that such a speed regulating device is of the highest utility, not alone in its tendency to reduce accidents, but also because of its usefulness in conserving fuel, besides other collateral advantages.

Various other changes in the shape, size, and arrangement. of parts, may be made to the form of invention herein shown and described, without departing from the spirit of the invention or the scope of the claim.

I claim:

In a speed regulator attachment for motor vehicles the combination of a relatively thin supporting ring having a passageway therethrough, a valve operating in said passageway having a pin rotatably bearing in said ring, a lever arm connected with said pin in right angled relation therewith eXteriorly of the ring, said arm at the free end thereof having a rigidly connected arcuate armature struck concentric with the pivot axis of said pin, a bracket arm radially carried by said ring rigid therewith, and a solenoid tube carried by said bracket arm at the outer end thereof having an arcuate passageway there- 

